Where do they sell electronic adaptors for things such as hair dryers to use in foreign countries?

Suitcase stores usually have them alongside all the usual travel gadgets.

Where do they sell electronic adaptors for things such as hair dryers to use in foreign countries?

try radio shack or best buy

Where do they sell electronic adaptors for things such as hair dryers to use in foreign countries?

go to any electronic/electrical shops. Here in Saudi Arabia it can be bought from almost any electrical shop. Its because there are two standard here voltages the 110v and the 220 volts. I dont know in your location but im sure it is available. Its name is a voltage converter. its handy measuring about 2"x3"x2.5". and is usually coming in 75-100 watts. Check for a higher wattage for your hair dryer because that will burn the thing down, check the wattage of your hair dryer and make sure the wattage of your converter is higher that that of your hair dryer. good luck

Where do they sell electronic adaptors for things such as hair dryers to use in foreign countries?

They are readily available on the internet. Europe and Asia use different adaptors, so make sure you get what you need.